baber/WOPTO huggingface dataset:
Patent GB-1493675-A (GB)
Title: Process for producing a transparent block copolymer resin
IPC: C08F297/04
Filed: 1975-02-13
Abstract: 1493675 Resinous block copolymer preparation SUMITOMO CHEMICAL CO Ltd 13 Feb 1975 [13 Feb 1974 12 June 1974] 6186/75 Heading C3P A block copolymer comprising at least 65% of an alkenylaromatic monomer and up to 35% of a conjugated diene monomer has at least three blocks, linked in any order, comprising (A) at least one non-elastomeric block formed from one or more alkenyl aromatic monomers only, the block(s) (A) forming 50 to 90% of the total alkenyl aromatic monomer content, (B) at least one elastomeric random copolymer of the alkenylaromatic monomer and the conjugated diene in a weight ratio of 0À1 : 1 to 3À0 : 1, and (c) at least one further elastomeric block which is (i) a homopolymer of the conjugated diene and/or (ii) a random copolymer segment of the alkenyl aromatic monomer and the conjugated diene in a weight ratio less than 0À1 : 1, blocks (B) forming at least 50% of the total elastomeric blocks (B) and (C). The block copolymer is obtained by the usual sequential polymerization using an organolithium initiator and a hydrocarbon solvent; the random structure in block (B) is obtained by continuously feeding the monomers to the polymerization system without accumulation of unreacted monomer. Optionally a Lewis base, such as an ether or amine, may be included. The examples refer to the production of the following block copolymers (where B is polybutadiene, B/S is butadiene/ styrene random copolymer, and S is polystyrene) in the presence of n-butyllithium or oligoisoprenyldilithium in cyclohexane, in some cases in the presence of tetrahydrofuran as Lewis base: S-B/S-B-S, S-B-B/S-S, S-B/S-B-B/S-S, B-B/S-S, and S-B/S-B-B/S-B-B/S-S.
Patent GB-380718-A (GB)
Title: Improvements in or relating to spray guards or screens for boats
IPC: B63H20/00
Filed: 1932-03-01
Abstract: 380,718. Spray guards. HULST, C. P., P.O. Box 515, Easton, Maryland, U.S.A. March 1, 1932, No. 6191. Convention date, May 8, 1931. [Class 113 (i).] To protect an outboard motor from spray or rain an athwartship screen 5 is mounted at the stern. The screen is made in two halves to facilitate the transverse operation of the tiller T. The frame supporting the screen is hinged at 3 to uprights on a transverse member 1 which is clamped to the gunwales G.
Patent GB-493018-A (GB)
Title: Method of making hosiery
IPC: D04B9/46
Filed: 1938-02-28
Abstract: 493,018. Knitted fabrics. MASCHINENFABRIK EINSIEDEL GES. Feb. 28, 1938, No. 6202. Convention date, Feb. 27, 1937. [Class 74 (ii)] A stocking blank, produced initially without a heel, has auxiliary fabric portions d knitted at the sides of the high heel portions a by setting on new loops e, e<1> and transferring loops outwardly in alternate courses thereafter, until the wales of the fresh loops extend beyond the desired width of the foot b. The auxiliary portions d are removed, when the stocking is completed, by cutting along a line of openings k. Specification 425,584 is referred to.
Patent GB-846247-A (GB)
Title: Production of ª†-benzopyrone derivatives
IPC: C07D311/24
Filed: 1959-02-23
Abstract: g -Benzopyrone-2-carboxylic esters are prepared by heating an ester of a substituted dihalogeno acetic acid of formula:-R1-O-C(XX1)-CO-O-R2 I where R1 and R2 are the same or different alkyl, aralkyl or cycloalkyl groups and X and X1 are the same or different halogen atoms, with an ortho acyl phenol of formula:-R3-CH2-CO-Bz-OH II where R3 is hydrogen or alkyl, alkoxy, aryl or aryloxy and Bz represents a benzene ring which may or may not carry substituent groups or fused benz rings.  A solvent and also catalysts such as finely divided platinum, palladium or ruthenium may be used.  Crude alkoxy-dihalogeno acetic esters containing oxalic esters and phosphorus halides may be used.  When the compound II is a monophenol, equimolecular quantities of I and II are used; when it has a second hydroxy group, 2 mols of I are preferably used per mol of II.  Compounds prepared in examples are: chromone-2-carboxylic acid ethyl, butyl, cyclohexyl and benzyl esters, isoflavone 2-carboxylic acid ethyl ester, 7-chloro-isoflavone-2-carboxylic acid ethyl ester, 3, 7-dimethyl-chromone-2-carboxylic acid ethyl ester, 3-methyl-7-hydrochromone-2-carboxylic acid ethyl ester, 3-(a -chloro-b -naphthyl)-5, 8-dimethyl-g -benzopyrone-2-carboxylic acid ethyl ester, 3-a -naphthyl-g -benzopyrone-2-carboxylic acid n-butyl ester, 3-phenoxy-g -benzopyrone-2-carboxylic acid n-butyl ester and benzo (7 : 8) chromone-2-carboxylic acid n-butyl ester.
Patent GB-967074-A (GB)
Title: Process and apparatus for the production of zinc by the reduction of zinc oxides in a multiple-retort furnace
IPC: C22B19/04
Filed: 1961-02-21
Abstract: <PICT:0967074/C6-C7/1> <PICT:0967074/C6-C7/2> A continuously heated furnace, for producing zinc by reducing zinc oxide, comprises banks of retorts 3 in the furnace faces 2, which open directly into recesses 4 in the faces, and are divided up into cells of one or more retorts which discharge into primary collectors 6, sealed by movable access doors 5 outside the furnace face, which are curved in plan, the collectors connecting up through conduits 7, 8 to a main collector 12 which is connected to apparatus for recovering zinc from the gaseous mixture passing through the system. A damper with a control rod 11 is positioned between conduits 7 and 8, and can shut off the flow from any cell to the main collector 12 which is situated on the lower part of the arch 1.  In the embodiment of Fig. 5, the conduit 7 enters a chamber 14 by an opening controlled by an externally operable valve member 18, which sits preferably on a sand-filled tray 20. Adjacent chamber 14 is the main collector 12 with an inclined side wall 16, which connects through to chamber 14 by an opening 17, also controlled by the valve member 18.  A plug 22 is controllable by an externally operable rod 25 for cleaning purposes, when a rod may be inserted through openings 26, 22 and 17 into the mouth of conduit 7.
Patent GB-1029813-A (GB)
Title: Engine starting mechanism
Inventor: SEILLY ALEC HARRY
IPC: F02N15/06
Filed: 1962-02-19
Abstract: 1,029,813. Engine turning gear. C.A.V. Ltd. Feb. 6, 1963 [Feb. 19, 1962], No. 6267/62. Heading F1K. [Also in Division H2]  Engine starting mechanism of the kind wherein a pinion is associated with the shaft of the starter motor and a solenoid is provided for moving the pinion into engagement with a toothed wheel of the engine together with a switch which is closed when the pinion and wheel are in engagement to complete the motor energizing circuit has the solenoid winding connected across a part of the motor circuit in which the current flow is inversely proportional to the motor speed so that if a starting switch is held closed after the engine has started and the motor exceeds a predetermined speed the action of the solenoid is overcome by resilient means such as a spring to withdraw the pinion from engagement with the tooth wheel at the same time opening the switch to break the motor energizing circuit. The switch for energizing the motor circuit may be of the kind operated in two steps, the first of which energizes the motor at low power until the pinion is fully engaged with the toothed wheel, the second step then causing full motor energization. The low power energization may be effected by using only a part of the field windings or by a resistor in series with the field. Alternatively the switch may be arranged to effect full energization of the motor in one step. An auxiliary relay is provided with contacts which open when the pinion is disengaged from the toothed wheel by the resilient means overcoming the solenoid to prevent re-energization of the motor should the starting switch be held closed.
Patent GB-724296-A (GB)
Title: Circuit element having a negative resistance
IPC: H03F3/10
Filed: 1953-03-06
Abstract: 724,296. Semi-conductor devices. STANDARD TELEPHONES & CABLES, Ltd. March 6, 1953 [March 10, 1952], No. 6274/53. Class 37. [Also in Group XL (c)] A semi-conductor body is biased with a D.C. voltage in the low-current direction and with an A.C. voltage whose peak value is greater than the D.C. bias, and whose frequency-is such that the charge carriers produced in the forward half-cycles of the A.C. do not all disappear during one period of A.C., whereby a region of negative slope in the voltage-currentcharacteristic is produced. A germanium semi-conductor with phosphor-bronze cat's whisker constituting a diode rectifier 6 (Fig. 4) is fed with A.C. at a frequency of the order of 2-3 mc/s. by a transformer 11, 7 and with a D.C. potential in the high-resistance direction by a battery 17. When the A.C. voltage is sufficiently high the normal voltage-current characteristic 12 (Fig. 3) of the rectifier is deformed as shown at 13 to produce a region of negative slope between points 14, 15. The load line for the circuit cuts the characteristic at 20, 21, 22, the points 20, 22 representing conditions of stable equilibrium, at which a pulse of negative or positive voltage respectively will cause the circuit to pass to the other stable equilibrium position.
Patent GB-140890-A (GB)
Title: Improved means of obtaining stereoscopic effects in projected pictures
IPC: G03B35/00
Filed: 1919-03-13
Abstract: 140,890. Dickinson, H., and Hepburn, G. A. W. March 13, 1919. Optical-projection apparatus; kinematograph apparatus; optical systems.-In order to produce a stereoscopic effect in kinematographic or other projected pictures, the projected image is split into two by means of a transparent reflector 2, and the rejected portion is again reflected by an inclined mirror or prism 4 so as to be superposed upon the transmitted portion on the screen, but slightly out of register. The two images are reflected bv a mirror 6 on to a screen 7, which may be viewed in the mirror 6 by an onlooker from the. position 8.
Patent GB-105967-A (GB)
Title: Improvements in Weighing and Computing Scales.
Inventor: WHITE ALFRED ERNEST
IPC: G01G23/30
Filed: 1916-05-03
Abstract: 105,967. White, A. E., (Toledo Scale Co.). May 3, 1916. Computing-apparatus.-The reading portions of a weighing and computing scale are illuminated by artificial light in such a manner as to obviate injurious heating of the indicating chart. Within the upper portion of the casing are arranged electric lights 17 separated from the indicating chart 8, Fig. 5, by means of glass plates 26. Translucent advertising signs 28 are arranged at each side of the casing. The electric lights are partially enclosed by curved reflectors 27 forming part of and extending across the casing, the radius of curvature of the reflectors being greater at the centre than at the ends. Each side of the indicating chart is illuminated by the lamps at the same side, the advertising signs being illuminated by light passing above the indicating chart from the opposite side of the casing. The chart indications are read through openings 24, 25 in the casing. The lamp circuits are supplied from a portable service plug 18. The lamps are automatically lighted when the scale is being used.
Patent GB-922661-A (GB)
Title: Improvements in or relating to openers for combination locks
IPC: E05B19/20
Filed: 1961-02-21
Abstract: 922,661. Locks. I. JACOBS. Feb. 21, 1961, No. 6371/61. Class 44. A device for opening a combination lock comprises a crank 20 driven by a motor 26, a flexible connecting rod 18 pivotally attached at one end to the crank, a gripping means 11 attached to the other end of the connecting rod and engageable with the setting knob 12 of the lock. The arrangement is such that rotation of the crank effects an oscillatory motion of the shaft carrying freely rotatable discs by which the combination is determined, whereby the discs are given random rotations to align slots and the edges therein to allow a fence to engage the slots and permit the lock bolt to be freed without knowledge by the operator of the particular combination to which the lock is set.
Patent GB-253190-A (GB)
Title: Improved point control arrangements for railway sidings
IPC: B61L17/00
Filed: 1925-03-10
Abstract: 253,190. Siemens Bros. & Co., Ltd., and Ferreira, L. de M. G. March 10, 1925. Electric operation and control; electrically controlled by vehicle.--In a railway siding lay-out with electric route selection, each points-motor has a single controller operated by every route switch involving the points, this controller preventing a reversal of the points until they have been passed by the vehicle. Battery application to wire 10, Fig. 1, energizes relay Q which makes a stick circuit through contacts p<4>, q<3>, and r<1>. The circuit of motor M is closed through contacts d<2>, q<1> and r<4>. When the track is occupied, track-circuit R opens its contacts r<1>, r'. Contact r<3> leads to the indicator diagram, while contacts r<2>, p<2> and q<2> are in a circuit common to the route switches. When the points have. been reversed, contacts d<2>, d<4> are broken and contacts d<1>, d<3> are made so that detector relay T is energized and lamps L<1>, L<3> are iit, relay S being de-energized. Battery application to wire 20 will not energize relay P to operate the points until a vehicle has reached the points, when track relay R will operate to open the stick circuit of relay Q. The detector relays S, T operate contacts s<1>, t<1> for lamps L<2>, L<3>, and contacts s<2>, t<2> leading to similar contacts in succeeding relays. Fig. 4 shows the control for one of the final points G. Contact r<2>, Fig. 1, connects through lead 17 to route switch such as B<8> or indicator L<4>, and return. Switch B<8> when operated energizes relay E<8> and lamp L<18> so that a stick circuit is completed through contacts #<8>, e<81>. Contacts e<82> - - e" lead to the contacts p<4> of the relays P of the points involved in the route. This stick circuit is maintained until broken at contact f<8> by energizing relay F<8> and lamp L<28> through the detector relays T and contacts t<2> of the involved points when correctly set. Operation of any other route switch will be ineffective until the first points have been passed by a vehicle so as to open the stick circuit of the relay Q and re-energize the lead 17.
Patent GB-720798-A (GB)
Title: Improvements in or relating to locks
IPC: E05B63/04
Filed: 1953-03-10
Abstract: 720,798. Locks. MEFINA SOC. ANON. March 10, 1953 [May 20, 1952], No. 6545/53. Class 44. In a lock having a bolt operated from a cylinder lock mechanism through a driving member mounted on the cylinder and having a pin or projection engaging in an opening in the bolt, interengaging parts or dogs are provided on the driving member and on the inner end of the cylinder so disposed that the former may be located on the latter in four alternative positions. As shown in Figs. 1 and 2, the bolt 2 slides in a casing 1 and is actuated by a follower 3 rotatably mounted in the casing and having a projection 14 passing through an opening 15 in the bolt. The driving member 6 is carried on the cylinder 7, the inner end of which has two female parts 9 in which are adapted to engage projections 10 on member 6. The latter has two horns 13, one or the other of which engages the projection 14 of the follower 3. Thus, whatever the position of the lock casing on the door, &c., the cylinder may be arranged so that the key slot is vertical. The bolt, and the shape of the opening 15, are symmetrical about the central transverse axis of the opening, so that the bolt is reversible.
Patent GB-268941-A (GB)
Title: An improved sole for footwear adapted to prevent slipping
IPC: A43B13/22
Filed: 1926-03-09
Abstract: 268,941. Milne, G. N. March 9, 1926. Soles.-Crepe rubber soles having U-shaped wire pins or staples incorporated therein angularly to prevent slipping are characterized in that the pins 2, Fig. 3, are disposed in groups so that the angular disposition of the pins of one group differs from that of an adjacent group. Staples of the type generally used in card clothing are preferred, and the staples may be straight or bent as at 3, Fig. 2. both forms being preferably pointed or chisel shaped at 4. The staples may be driven into or otherwise disposed in the crepe rubber.
Patent GB-1491719-A (GB)
Title: Microprocessor for word processing system
IPC: B41J5/42
Filed: 1974-10-31
Abstract: 1491719 Microprocessor XEROX CORP 31 Oct 1974 [2 Jan 1974] 06705/77 Divided out of 1491718 Headings G4A and G4H A microprocessor for communicating with a plurality of peripherals 50-60 in a word processing system such as that disclosed in parent Specification 1,491,718 comprises a ROM48 which generates a plurality of instruction words B 0 -B 15  on an instruction word bus 62 in response to corresponding addresses 104, an ALU 114, and a plurality of addressable general purpose registers 116, each word being generated in parallel format on bus 62 and having the format specified below. The control bus, a data bus 110 and a status bus 100 are common to the whole system. Each peripheral is controlled via decoders 64-74, and interrogated via multiplexors 88-98 (Figs. 2, 3, not shown) to produce an output on line 100 which controls branching of a control program. ROM48 is accessed by a register 102 controlled by status line 100 and a return address register 106 (figs. 17a-17e, not shown). Each step in any operation on bus 110 requires a separate instruction on bus 62, all data being passed through a master register 112 via the ALU which tests and compares the contents of the registers and/or the signals on busses 62, 110 (Fig. 17f, not shown). Instruction Word Format.-(a) Each of a first form of instruction word is for controlling a peripheral (e.g. Figs. 4, 5) and includes: (1) a peripheral address; (2) a branch bit for specifying whether the peripheral is to be controlled or its status condition tested to determine whether to branch to a new ROM address; (3) a branch qualifier when a branch is specified to indicate whether the condition is met; (4) a "next relative address" when a branch is specified, to be included in the next ROM address if the branch is taken, and (5) a device command when control is specified. (b) Each of a second form of instruction word is for controlling the ALU and a register 116 (e.g. Fig. 12) and includes: (1) an address which specifies a particular operation; (2) a branch bit for indicating whether data is to be operated on or tested for possible branching; (3) an ALU function specifier; (4) a general purpose register address, and (5) a next relative address. (c) Each of a third form of instruction word is for controlling the ROM (e.g. Fig. 10) and includes: (1) a code specifying a jump to a new ROM address, and (2) a new ROM address. Other forms of instruction word are described with reference to the remainder of Figs. 2-16 (not shown). Flow Charts.-Use of the microprocessor in controlling printer 60 and other peripherals is described with reference to Figs. 18-28 (not shown).
Patent GB-1493035-A (GB)
Title: Synchronized gearboxes having at least one non-synchronized speed
IPC: B60K17/08
Filed: 1975-02-18
Abstract: 1493035 Change-speed control AUTOMOBILES PEUGEOT and REGIE NATIONALE DES USINES RENAULT 18 Feb 1975 [6 March 1974] 6732/75 Heading F2D In a motor-vehicle transmission, a non- synchronized reverse 16 is synchronized by engaging the cone synchronizers 10 of the direct drive fourth ratio, the shift rail 18 of which is taken along, to an extent limited by an extension 25 of the notch which receives the usual drift-block interlock 22, when the reverse shift rail 20 is shifted leftwards to establish reverse, by turning movement of a slide-turn selector shaft 42, which carries two selecting fingers one, 41, selecting the forward 1-2 and 3-4 shift rails 21, 18, the other 45 the reverse shift rail 20, and, when the selector shaft 42 is slid axially (downwards) for the finger 45 to select the reverse rail 20, the finger 41 engages a fork 47 of a sleeve 46, slidable on the forward shift rails 21, 18, and connected to the 3-4 rail 18 by a fielding ball detent 49, which causes the subsequent reverse-establishing turning movement of the selector shaft 42 to shift also the 3-4 rail 18 sufficient to engage the fourth ratio synchronizing cone 10, thereby synchronizing reverse. An essential condition is that the ball detent 49 is stronger than, and so can overcome the usual positioning ball detent 28 locating the 3-4 rail 18, which, after synchronous establishment of reverse, returns the 3-4 rail to neutral by pressure on the side of its neutral notch 30.
Patent GB-609058-A (GB)
Title: Improvements relating to synthetic-gem composition
IPC: C30B29/26
Filed: 1946-03-05
Abstract: A hard synthetic gum composition comprises minor proportions of CuO and TiO2 combined with major proportions of at least two other colour oxides.  Preferably, for maximum density, the composition consists of at least 5 per cent CuO, at least 5 per cent TiO2, the balance consisting of two or more oxides taken from the groups Fe2O3, CoO, NiO and Cr2O3.  Whe density is less important, the base oxides are fluxed with one or more silicates taken from the group calcium silicate, calcium magnesium silicate, nepheline syenite or feldspar, preferably a potash feldspar; these fluxes may conof 50 per cent of the total composition without affecting the deep black colour which can be obtained without them.  Assuming that the composition consists of 100 parts of TiO2, 100 parts of CuO, 800 parts of Fe2O3 and 800 parts of CoO, it is mixed, then passed through a disintegrating machine, then calcined until every portion has been subjected to full heat for at least an hour.  It is now ground in a pebble mill in wet slip form to a fineness that will pass a 400 rush screen, and is passed through a silk bolting cloth.  The remainder is dried to powder form, then disintegrated and mixed with pressing aids such as wax emulsions, solutions of starch, or dextrine, and portions of it are then shaped or formed with designs by pressing them in presses equipped with dies.  The pieces stand till dry before being fired to the maturation temperature of 2000 DEG F.  When flux is to be used, it is finely powdered and added to the oxides after they have been calcined, dried and disintegrated, then the body is blended and prepared for pressing into shape.  Examples of variations of the constituents and their proportions are given in the Specification.
Patent GB-747290-A (GB)
Title: Improvements relating to electrical relays
IPC: H02H1/00
Filed: 1954-03-09
Abstract: 747,290. Protective cut-out arrangements; induction relays. CHAMBERLAIN & HOOKHAM, Ltd., DEACON, L. O., and LEWIS, H. S. March 9, 1954. No. 6797/54. Class 38(5) In a modification of the invention disclosed in Specification 588,169 in which a tapped primary winding a of a saturable transformer d is supplied from an A.C. system by a winding c and the secondary winding e is connected to the magnet of an induction relay to cause, e.g. tripping of a circuit breaker, the winding e is adapted to provide a variable current. As shown, the winding e has tappings f; alternatively (Fig. 2, not shown), the winding e is in sections which may be connected together in series, or in parallel, or otherwise arranged.